Facepiece canister attachment



Aug. 16, 1949- A. v. MOTSINGER 2,478,936

FACEPIECE CANISTER ATTACHMENT Filed Aug. 10, 1942 2 Sheets-Sheet 1 A. V. Mots finger 16, 1949- A. v. MQTSING ER 2,478,936

' FAC EPIEC E CANISTER ATTACHMENT I Filed Au 10, 1942' 2 Sheets-Sheet 2 A. V. Mofsinger Patented Aug. 16, 1949 UNITED: STATES PATENT.iorrics rAoErrEcE CANISTER ATTACHMENT v 'Armand V. Motsingen'A'b'erdeen, V I v I I Application Angus 1 0,194as na1 qo45g20 3Claims. (01128 -140) f (Granted under the act of March 3, 1883, as

amended April 30, 1928; 370 0. G. 757) The invention described herein'may be manufactured and used by or for the Government for governmental purposes, without the payment to me of any royalty thereon. i This invention relates to means for, and methods of supporting a canister in an eificient and effective position relative to the facepiece of a gas mask. Under certain conditions it is advantageous to support the canister in a carrier suspended at the side of the wearer, with a flexible hose connection between "the canister and the facepiece. There are, however, certain objections to this socalled type of side carried canister. Among these objections may be mentioned two; namely,

interference with body movements, and tendency of the hose to catch onto objects. 7

7 An alternate manner of carrying the canister, and one which is notably free of the objections specif cally mentioned in the preceding paragraph, involves locating the canister at the back of the head of the wearer, with the canister supported directly by the head harness. This a1ter-- native, while affording as it does, greater freedom of body movement and results in the locating of the air hose or tube so as to reduce to a minimum the likelihood of the same becoming en,- gaged with extraneous objects, is not without certain disadvantages. Tendency of the head carried" type of canister to rotate or swing laterally, to become easily displaced, and to interfere with the eflicient use and adjustment of the protective hood, are some of the things that militate against such type of canister as is nowknown and used.

The primary object of this invention is to overcome the objections, those herein enumerated and others known well to those skilled in this art,to such prior art types of headcarried canisters, and to that end the invention resides in the provision of an improved fastener for securing the canister to the head harness, and in a more efficient method of attaching to, or associating the fastener with the head harness.

The invention together with its object and advantages will be best understood from a study of the following description taken in connection with the accompanying drawings wherein:

Figure l is a top plain view illustrating an application of this invention.

Figure 2 is an elevational view of a fastener plate forming part of the invention.

Figure 3 is a fragmentary elevational view of the head pad of a head harness, with certain parts broken away and illustrating one manner 2 of associating the fastener of this'invention with the head pad. I l Figure 4 is a view similar to Figure 1 and illustrating a'second application of the invention.

Referring more in detailito the drawings-5 indicates generallya portion of a head harness for a gas mask such as disclosed in my Reissue Patent No. 20,211 and characterized by the provision of an independent positioning element 6 that serves as a head pad to bear against the back of the head of the wearer when themask is in use, and also for maintaining the flexible or'elastic retaining members I in predetermined spaced re-. la'tion on the head. Since the'parts justreferred to are not'of the essence of this invention, further.

detailed description thereof is deemed unneces.- sary. g

For reasons well known to those skilled inthe. art, itis sometimes desirable to carry the air-purifying canister 8 of a gas mask at the back of the head instead of in a carrier disposed at the side of the wearer. As set forth in the statement of theinvention, the immediate concern of this in-. vention is the mounting ofthe canister 8 at the back of the head. I I I To the end just stated, there. is provided a fastener indicated generally by the reference numeral'9.

In the" illustrated embodiment thereof, the fastener 9 comprises-a resilient, metallic plate III adapted to be'mounted on the head pad 6 as hereinafter detailed, and a resilient metallic plate ll complementing the platelll and adapted to be mountedon the canister 8. 1

i Plates l0 and .II are complementarily equipped to provide.- for a quick detachable. connectionthere-between, and one which will positively prevent any accidental relative movement of the plates;

For mounting pad 6. there is provided an attaching element or cap 12 that is preferably formed of rubbenbut which can be formed ,of any suitable elastic and readily moldable material. The cap I! may be applied to the pad 6 in any way found most desirable and advantageous, and in such a manner as to completely envelop the pad 6 as shown in Figure 3. 7

In the periphery thereof, cap I 2 is provided with circumferentially spaced openings, as shown, to accommodate the elastic retaining elements I with which pad 6 is associated.

Cap l2 has moldably formed thereon a pair of slightly spaced, align-ed loops l3 through which the plate I0 extends as is shown in Figure 3. It

the fastener plate 'I 0 on the head" In is held in position untoward shiftwill thus be seen that plate relative to the head pad 6 against ing or rotative movement.

The plate I is longitudinally curved or bowed to conform somewhat to the contour of the head as suggested in Figure 1. Also, at the free ends thereof plate, li0is' enlarged as at". Ida-I 4, and. the extremities of said; enlarged endsare pref erably rounded as illustrated.

Fastener plate ll of a metallic strip longitudinally. curyedonbowed. to substantially complement the curvatureofthe plate at Ill. However, intermed'iate its .ends,-plate; l l is fashioned into a relatively shallow substan tial U and at the bight to the canister 8 through the medium oftsuitahle fastening elements as shown.

For receiving the ends I l-tofu fastenerrplatelllls fastener plate H inwardly from therespective-' opposite ends thereof is. provided with flanged elements: thati-ooactcwith the ends; Mot plate ill in detachably securing these iastenen plates mthim.

The. elementstfii are inz the form of platesrivetech or: otherwise-suitably secured to the plate M2 at; the; concave. SldEE'Qf the: latter; andthese plate-like. elements: have rou d d? e gespr vi d withz flangesil I: which;cenformablyE accommodatev with n; the; confines thereof the rounded ed e portimrs oi. terminals-l lgfi ofrplate H The flanges. b1: and associated: plate; elements form sockets: intoswhichthezterminals limof'plate Ill; are in? sertah-le; r and theinner ends: of these-- sockets overlyin flange sections-18a serve. o; eff actively retain; theplate? ends Ht within the} aforemenetionedrsocliets.

From the foregoing, it is apparent that itis: nel'atiitelyz simple matten to: engage and. disengage fastener plates-e lzD: andi M for efiecting aeplace mentsonremovah otitheacanisten 8. To p0sitionthe; canister 1 air. the ,back; 0.15v the: head? harness, all; that: necessary is tOi press the canister in the: direction of: the. head with: the; 'socket-.equipped:= portionsofplate Ill; he the; regions of. theater minals M of plate In, whereupo'rrithe terminals is will: snaprintoepositiqm within the; socket It for? eflfecting; a coupling. ofr; the, fastener plates;

It will also be apparent from the foregoing: that with: a f astener'of-r this character-j; canister; 8 securedi: againstl accidental." displacement: and against: swinging" or rotating: later allyin'- either:- diheetion.

I As: hereinbefore; noted objection: to the. use:- of; the so-called head carriedf type canistenresidedg mainlyzin itsiuselessnessswhereaprotective clothing must; belwornl. In; this ccnnectiomitl. may -be obx+= thafiund'er: certain conditions" in chemical.

wanfatte, resort-"- must heihad; to clothing.- in the? form of coveralls for protecting the skin against; uesieanthchemicalwarfareagents: Sushi-clothing usually? includes a.- protective hood worn. over and substantially enveloping the head? of the wearer; with enfastener: contemplated-hyithis: invention,

is substantially in the form;

1 terminals M of plate H] as the terminals. IA. may then ltewillithushe, seen that the fastener in nowise requires perforation of the hood I9 and consequentlydoes nofidetract from the protective value oithehood.

To remove the canister 8 from its position at 'thezbaelhzof thezihead of the wearer, all that is requirediis. lid-apply, with the fingers, pressure to the terminals of plate II for flexing the ends of; the; plate towards? the; canister 8;,- This; will nesultdnthe sockets: lfirslidingiofizofi thertenminals- M EID-dvGQUSEQ-KIEHtIY-Gr quick. separation,- Dig the. fastener plates.

Having; thus described, the invention, what is 01843111664185; 7

h-Ini- 2.5, fastener of. the: character described,- a cap member, a fastener plate secured thereto-and having tree ends. and an; article-supporting, fastenet-r plate: complemented to the first; plate. and. having, thereomspaced sockets intoiwhich-the freeends: of. the: first plate. areadapted to'spring for detachably securing, the plates-together.

A For use-in-mounting anain purifyingcanis- 1 tergonethe-heads padiofla gas mask head harness;

an elastic head padenveloping: capz having spacedr loops moldably formed thereon;v a resilient. fastener, plate: threaded. throughsaid. loops, and a resilient.canisterecarryingsfastener plate provided withisockets; in which are; removably insertable the: ends:- of: the first mentioned. fastener plates 3. A.separable zfastener comprising anattache ing, member ohnubhen on similar'resilint mate-- rial aiastenen plate-carriedby said. member and? having; free endsi and; an articleesupporting fasetenen plate having spaced; flange-equipped pertionswithwhichlthafreeaendsiof the-firsttf-astener plate-are engageable: ion detachably securingthee plates together.

V I ARMAND-VL MOFI'SINGER;

REFERENCES CITED.

The following referencess'arei of: reco'rdin the' file of: this. patent: 

